Remove use of legacy SkFontMgr factories.

content/child/font_warmup_win_unittest.cc

Index: content/child/font_warmup_win_unittest.cc
diff --git a/content/child/font_warmup_win_unittest.cc b/content/child/font_warmup_win_unittest.cc
index 21ba20da10a1a662f26cadfcf406f458b800485b..47703ece7d831b86f4ebe50dd162b51535adc221 100644
--- a/content/child/font_warmup_win_unittest.cc
+++ b/content/child/font_warmup_win_unittest.cc
@@ -16,6 +16,7 @@
 #include "base/sys_byteorder.h"
 #include "base/win/windows_version.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/skia/include/core/SkRefCnt.h"
 #include "third_party/skia/include/core/SkString.h"
 #include "third_party/skia/include/core/SkTypeface.h"
 #include "third_party/skia/include/ports/SkFontMgr.h"
@@ -130,9 +131,11 @@ const wchar_t* kTestFontFamilyInvalid = L"InvalidFont";
 
 class TestSkFontMgr : public SkFontMgr {
  public:
-  TestSkFontMgr() { content::SetPreSandboxWarmupFontMgrForTesting(this); }
+  TestSkFontMgr() {
+    content::SetPreSandboxWarmupFontMgrForTesting(sk_ref_sp(this));
+  }
   ~TestSkFontMgr() override {
-    content::SetPreSandboxWarmupFontMgrForTesting(nullptr);
+    content::SetPreSandboxWarmupFontMgrForTesting(sk_sp<SkFontMgr>());

[f(malita), 2017/01/09 15:25:34]

nit: I think nullptr reads better here.

[bungeman-chromium, 2017/01/09 19:15:28]

Done.

   }
 
  protected: